E7010-A1
AWS A5.5 E7010-A1
ASME SFA 5.5 E7010-A1
E7010-A1 is a high cellulose electrode developed specifically for welding pipe lines. Although this electrode may be used in any position, it is best suited for vertical up or vertical down welding. E7010-A1 yields a forceful arc with deep penetration, producing a weld puddle that wets and spreads well, with rapid solidification. Weld deposits are of X-ray quality, with 70,000 psi tensile strengths and containing 1/2% Mo, E7010-A1 electrodes may be used with AC or DC (reverse polarity).
Preheating:
When welding carbon-molybdenum steels, preheating at 300-575oF is recommended. Exact preheat temperature will depend upon the
thickness and hardening characteristics of the work piece.
Applications:
E7010-A1 is most commonly used for welding carbon-moly piping used in high pressure, high temperature steam service and structural shapes,
plates and castings, which have a 1/2% Mo content.
TYPICAL WELD METAL CHEMISTRY (%)
C | 0.090 |
Mn | 0.430 |
Si | 0.140 |
Mo | 0.490 |
P | 0.012 |
S | 0.010 |
TYPICAL MECHANICAL PROPERTIES OF WELD DEPOSIT
(As welded)
Yield strength (psi) | 65,000 |
Tensile strength (psi) | 80,000 |
Elongation in 2" (%) | 29 |
Charpy V-notch at - 20 degrees | 65 |
AVAILABLE SIZES AND RECOMMENDED CURRENT (DC+)
Diameter (in.) | 3/32 | 1/8 | 5/32 | 3/16 |
Length (in.) | 14 | 14 | 14 | 14 |
Amps F | 60-90 | 90-120 | 120-160 | 160-200 |
Amps | ||||
V & O | 50-80 | 80-100 | 110-150 | 150-180 |